Power supply board

PDF_Power Supply Board.zip

Altium power board.zip

PADS_Power Supply Board.zip

BOM_Power Supply Board.xlsx

95936

power_board

Adjustable power supply
supports 5-20V input and
0.5-18.5V output;
real-time voltage and current display;
constant voltage or constant current output;
output overcurrent protection;
over-temperature protection;
PD fast charging input.

1. The DC-DC power supply uses a BUCK topology and an STM32G431 as the main controller.
2. The CH224K decoy chip can easily extract up to 20V from chargers or power banks that support PD fast charging.
3. Interaction is achieved via an LCD screen and rotary encoder. The LCD homepage displays the target voltage, current, switch status, actual output voltage, current, and power. A long press enters the menu settings page, where the PD-induced voltage can be adjusted, and voltage, current, and temperature calibration and viewing functions can be performed. A power statistics function can be added later.
4. When the actual current is less than the target current, it is in constant voltage output mode, and the constant current indicator is off. When the actual current is greater than the target current, it is in constant current mode, with the constant current value being the target current value, and the constant current indicator is on. This mode is very convenient for charging batteries.
See the demonstration video on Bilibili: BV1zr421p7jG

Demo video.txt

PDF_power_board.zip

Altium_power_board.zip

PADS_power_board.zip

BOM_power_board.xlsx

95938

Hikvision 4117 thermal imaging modification

Hikvision 4117 adapter board

The BOM (Bill of Materials) is just one component on the adapter board. Other required components include:
a 15*15*1.5mm copper heatsink
, a 0.5mm silicone thermal pad (can be cut to size or 15*15mm is fine)
, M1.4*2.5*2.3mm hot-melt knurled nuts, and
M1.4*4mm flathead Phillips screws.
 
Let's first discuss the features: the back is open, let's call it the "Exploration Edition" for now. It has two USB-C ports, one male and one female, for connecting to a phone or a computer (only one can be connected at a time, not both simultaneously). It has a parameter adjustment switch, allowing you to adjust parameters directly without disassembling the casing. The focus ring is knurled, providing a very good feel.
Precautions:
1. Due to the open back, be careful to prevent water and dust damage.
2. Only one USB port can be connected at a time.
3. Adjust the switch when the power is off; do not move it when the power is on. (Later I found that the OTG and USB switches were basically useless, but I was too lazy to change them.)
4. When the switch is set to CAM or OTG, it can connect to either a computer or a phone; when set to USB, it can only connect to a computer. When the switch is set to DUG, it enters parameter tuning mode, requiring an external network card.
I won't go into detail about disassembling the module; solder the adapter board. The wires are pin-to-pin; just solder them parallel to each other, as shown in the picture .
Note that you shouldn't use wires that are too thick, otherwise they won't fit. After
attaching the heatsink
and soldering, cover the front of the board with a layer of tape to prevent the components above from being knocked off during installation (don't ask me why I'm reminding you) .
Clean off the supports
and then put on the knurled nuts. Install the motherboard
and then install the adapter board on top. This step requires some patience; be careful not to damage the components below, which is why you use tape.
The rest is simple: install the ribbon cable. Note that there are two layers of foam at the shutter switch on the camera; remove them.
 
Put the cover on and screw it in.
Use a utility knife to remove the adhesive from the lens, cleaning both sides until you can screw the lens in.
Screw on the lens cap, and enjoy!
 
 
 
 

cb472fba3bc2bfc0f1ff28b6b9b097eb.mp4

Lens cap.step

Thermal imaging substrate.step

Thermal Imaging Cover.step

4117 Thermal Imaging Assembly.pdf

PDF_Hikvision 4117 Thermal Imaging Modification.zip

Altium_Hikvision4117 thermal imaging modification.zip

PADS_Hikvision 4117 Thermal Imaging Modification.zip

BOM_Hikvision 4117 Thermal Imaging Retrofit.xlsx

95939

electronic